Dishwashing machine



Sept. 1, 1931. a. F. LUNDELL DISK- WASHING MACHINE Filed April 24 1928 6 Sheets-Sheet 1 (Jade/l Bmwd E L Sept. 1, 1931;

8. F. LUNDELL DISHWASHING MACHINE Filed April 24. 1928 6 Sheets-Sheet 2 gwwntoc QQQQ a 3 3 as B. F. LUNDELL DI SHWASHING MACHINE Filed April 24, 1928 6 Sheets-Sheet 3.

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gwuentoz EQ Bernard/F Luna/e Sept. 1, 1931. B. F. LUNDELL 1,321,558

DISHWASHING MACHINE I Filed April 24, 1928. s sh i-s-heet 4 Sept; 1, 1931.

B. F. LU NDELL DISHWASHING: MACHINE Filed April 24, 1928 6 Sheets-Sheet 5 mm R w E m& a .3 R mm m 0% W a b g 3mm g a H Mord/F Lune/e firm- &

Sept. l, 1931.

B. F. LUNDELL ,558

DISHWASHING MACHINE '1 6 Sheets-Sheet 6 Filed April 24, 1928 Patented Sept. 1, 1931 onirso s-rAr-eis BERNARD F. LUnnEnL,

or wnnca,v MINNESOTA msnwnsnme MACHINE Application filed 'April 24, 1928.. Serial No. 272,490.

This invention relates generally to wash-'- ing machines and pertains particularly to amachine for washing the like, t The primary object of this invention is to provide, in a manner as hereinafter set forth, a machine designed to receive plates, cups, saucers, bowls, and silverware and to scrub the same thoroughly, maintaining each 0 article, with the exception of the silverware, in position for'the' action of a scrubbing device.

Another object of the invention is to pro vide, in a manner as hereinafter set forth, a dishwashin'g machine having individual brushes for each article of chinaware or like receptacles, by means of which the said receptacles are thoroughly scrubbed.

A still further object of this invention is to provide, in a manner as hereinafter set.

forth, a dishwashing machine in which the various articles to be cleansed are positioned in individualreceptacles or compartmentsto be operated upon by'a cleaning element 2'5 in the compartment, means being provided for the simultaneous operation of the clean-: ing elements and also for the simultaneous draining of the compartments.

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawings forminga part of the present invention with the understanding, however, that the inventionis not s'aconfined to any strict conformity with the showing of the drawings but may be changed or modified so long as such changes or modifications mark no material departure fromthe salient features of the invention was expressed inthe appended claims.

In the drawings: Figure I shows the machine embodying the present invention, in side elevation. A Figure 2 is a top plan View of the machine. i

Figure '3 is an enlarged horizontal section of the machine taken substantially upon the line 33 of Figure 1. v 1

Figure 4 is a vertical longitudinal section 5 taken upon the line 4.-4 of Figure 2'.

dishes, silverware and.

Figure 5 is a vertical longitudinal section taken upon the line 5-5 of Figure 3.

Figure 6 is a transverse section taken upon the line 66 of Figure 3.

Figure 7 is'a longitudinal section taken. upon the line 7'7 of Figure 3,

Figure 8 is a horizontal section taken transversely of one end of the machine;

Figure 9 is a view in end elevation of the end of the machine upon which the operating mechanism isv mounted.

Figure 10 is a bottom plan view of the outer one of a pair of the cup or bowl brushes.

Figure 11 is a vertical sectional View through a pair of plate scrubbers.

Figure 12 is a sectional View taken substantially upon the line 1212 of Figure 11. Figure 13 is a vertical sectional view through one ofthe cup or bowl scrubbers. Figure 14 is a sectional view taken hori- Zontally of the structure shown in Figure 13', substantially upon the line l l 1t of Figure 13. i I

Referring now to the drawings in detail wherein likenumerals of reference indicate corresponding parts throughout the several views, the numeral 1 indicates generally the dishwashing machine body. As shownthe body is generally of broad and relatively shallow construction and has the top edges connected by the transverse and longitudinal division bars 2 and 8 respectively thus forming four top openings each of which is covered by a door 4: hingedly attached to the'adjacent side wall of the body, as indicated by the numerals 5. Within the top of rthe body 1 beneath andin close proximity to the doors 4 is a hori- V zontal partition wall 6 which extends over the entire area of the body. I

Adjacentone side wall of the body be neath the partition there isarra-nged a longitudinally extending series ofpairs' of plate washers each of which platewashers is indicated as a whole by the numeral 7. The washers 7 of each pair are arranged in spacedrelation longitudinally of the body 1 and each washer comprises a vertically arranged narrow rectangular receptacle 8 which opens 10-13 through which it is accessible.

vertical recesses or slots 10 each of which opens into the slot 9 and has a shaft bearing 11 formed at the lower'end thereof, or in other words at approximately the central portion of the inner wall of the receptacle 8.

The lower wall of each receptacle 8 is in the form of a basin 12 and opens at its central portion into a valve casing 13 in which is rotatably positioned a cylindrical valve body 14 which is provided with a transverse passageway15. The valve casing 13 opens downwardly into the drain pocket 16, oneend of which pocket has connected thereto the laterally extending drain pipe 17 which discharges into a main drain-off pipe 18 that runs longitudinally of the machine.

Each valve body 14 has a rod extending from one end thereof as indicated at 19, which rod carries upon its free end the crank 20. The cranks 20 are all connected for simultaneous actuation by a control bar 21 which runs longitudinally of the machine, one end of the bar being supported in any suitable manner to permit of its being recriprocated while the opposite end thereof is pivotally attached to a vertically mounted control lever 22, the lower end of this lever being mounted upon a suitable bracket 23 and having its upper end positioned adjacent an opening 24 formed in the partition wall 6, From the description thus far given it will be readily understood that the contents of all of the receptacles 8 can be readily drained off through the oscillation of the lever 22 in the desired direction to simultaneouslyopen the valves through the rotation of the bodies 14.

Mounted upon the floor 25 of the bodies 1 to extend upwardly between each pair of receptacles Sis a pair of spaced substantially A-shaped standards 26 each of which is provided at its top with a bearing 27- and at its intermediate portion with the bearing 28. All of the bearings 27 and 28 are in align 'ment longitudinally of the machine, the

bearings 28 being located in a plane a substantial distance below the receptacles 8.

Extending longitudinally of'the machine through the bearings 28 is a crank shaft 29 carrying a crank'30 for and arranged bepair of standards is an upper crank 31 having the laterally extending aligned hubs 32 each projecting through the bearing 27 in the manner shown. Each of these hubs 32 receives a stub shaft 33 which extends through and is supported in the adjacent receptacle wall bearing 11. Each of the stub shafts 33 carries upon its inner end, within the receptacle into which it extends the circular brush back 34 which has projecting from the face thereof the brush bristles 35. V

Within each receptacle 8 there is mounted in the brackets 36 the ends 37 of a split wire ring 38 which forms a dish supporting bracket, a portion of this ring body 38 being extended inwardly as at 39 and formed to set up the centrally positioned ring 40 which carries a cushion pad 41 designed to bear against the back of a dish when the same is placed in the receptacle to rest upon the dish edge engaging portions 42 of the wire rings. As is shown the wire ring and pad 41 faces the brush bristles 35 so that the face of a plate will be held by the ring and pad against the bristles.

The cranks 30 of the shaft 29 are connected to the upper cranks 31 which are in overlying relation thereto by the connecting rods 43.

It is preferred in the construction of this machine that there be provided twelve pairs of plate washers 7 thus making the machine capable of handling twenty-four plates at one; operation.

The shaft 29 is supported in suitable bearings 44 at each end of the machine and at one end is provided with an extra crank 45 which is designed to be connected through the medium of the connecting rod 46, with the drive shaft hereinafter described. p V

Extending longitudinally within the body of the machine adjacent the plate washers described is a series of cup washers each of which is indicated as a whole by the numeral 47. Each of the cup washing structures comprises a cylindrical receptacle 48 hav ing the depressed botto1n49 through the central portion of which a packed bearing 50 is formed. Each of these receptacles of, and within, the receptacle 48.

.Each of the shafts 52 carries below the overlying receptacle a gear 53 and just above the gear the shaft extends through a bearing 54 which is carried upon a bearing supporting bar 55that extends longitudinally of the machine body. At its upper end within the associate receptacle 48 each shaft carries a collar 56 which in turn supports a resilient pad 57.

Surrounding the collar 56 which is mounted upon the upper end of the shaft 52 is a brush collar 58 from which there ex tends a series of outwardly and downwardly curving resilient arms 59 carryingbrush bristles 60. These arms at their lower ends turn inwardly and are provided with the slotted terminals 61' which lie transversely of the shaft and have extended therethrough securing screws 62 which are carried by the shaft. i The resilient arms 59 may be of course of any desired construction but it is preferred that they be of twisted wire having the bristles 60 clamped between the twisted strands of the wires in the usual manner. a i 1 Each of the cup washing receptacles is provided with a cover or lid 63, which'may be hingedly attached to the partition wall 6 or otherwise suitably connected therewith.

Upon the under face of each cover 63 and at the central portion of thesame there is attached thereto by the rivet or screw member 64 the resilient button 65 whichfwhen the lid is closed comes into .close relation with the resilient body 57 or contacts with the same.

This rubber button 65 carries a radially extending series of downwardly curving resilient arms 66 each of which carries throughout its length the bristles 67 which as the arms 59 and the bristles of the two cylinder 71 is positioned which has a pas-' sage 72 therein through which communica- ';ion can be established between the receptacle and the drain pipe to permit the running off of the liquid contents thereof.

The actuation of the valve cylinders is r accomplished through the use of a common control bar 7 3 which e'xtendsthroughout the length of the machine body and is connected with crank elements 74 carried by a shaft 7 5 projecting from each valve cylinder. As in the case of the control shaft 21 for the mit reciprocatory motion while the opposite end is pivotally connected to a' lever 76 piviotally mounted upon a bracket 77.carrie d by communicates one end of the wall of the machine. This lever 7 6, like the lever 22 extends upwardly toward an opening 78' formed in the partition wall 6 through which the operator of the machine can reach the lever.

Extending longitudinally of the machine beneath the receptacles 48 is a drive shaft 7 9 each end being'mounted in suitable bearings 80 upon the. end walls of the structure. At the end ofthe machine where the control levers22 and 26 are located the shaft 79 extends through the end wall and carries upon its outer end the gear 81. This gear 81 is in mesh with a relatively large gear 82 which is also located exteriorly of the machine and is mounted upon the extended end of a third. longitudinally extending shaft 83 which is withinthebody of the machine. The shaft 83 is mounted, like the shafts 29 and 79, in bearings 84 carried upon the end walls of the-body. The gear 82 is provided with suitable means for efiecting its rotation manually as for example by the provision of a'handle 85. It'is of course to be understood that a mechanical means may be employed for operating these gears, if practicable. I

The shaft 79 is provided adjacent the working end of the machine witha large crank86 to which is connected the crank arm .46 and a crank arm 87, the arm 87 having connection at its other end with the crank 88 of the shaft 83.

The shaft 7 9 carries a plurality of worms 89, one for each of the gears 58. In thismanner upon the rotation of the shaft 79 the shaft 29 will be rotated and simultaneous operation'of the cleaning devices in the receptacles 8 and 481will be effected.

The central portion of the bottom 25 of the machine isprovided with a longitudinally extending gutter 90' which gradually deepens toward one end of the machine and terminates'in the outlet 91 which is normally closed :by the plug 92. The drain pipes 18 and discharge into this gutter as clearly shownin Figures 5 and 7. I

The receptacles 8 and 48 take up substantially half of the machine as is clearly shown in Figure 3. The other half ofthe machine isprovided with bowl washers each of which is indicatedas a whole by thenumeral 93. Each of these bowl washers is and gear structure indicated as a whole'by the numeral 96, as in the case of the cup washers. The worm of this structure is carried upon. a fourth shaft 97 which extends longitudinally like the other shafts and carries a crank 98 at the working end of the machine which crank may be connected to the shaft 79 in the same manner in which the shafts 29 and 83 are connected thereto, that is through the medium of the connecting rod 99.

The same type of drain means is employed for the bowl washers 98, as is employed for the cup washers, and these drains are controlled by the bar 100 which extends beneath the bowl washers and is designed for reciprocatory motion, one end being suitably attached to the standard 101 which extends from the cross bar 2 to the floor 25.

The other end of the bar l00'is pivotally attached to the lever 102 which is vmounted upon the bracket 103 in turn mounted upon the end wall of the body remote from the wall upon which the levers 22 and 26 are 2 mounted.

the opening 104 which is formed through the partition 6.

A drain pipe 105 extends longitudinally of the machine beneath the bowl washers 93 and is connected therewith in the same manner in which the drain pipes 18 and 79 connect with the receptacles 8 and 48 and discharges into the gutter 90 like them.

i. In alignment with the bowl washers 93 9: there is arranged an elongated rectangular opening 106 formed through the partition wall 6 (see Fig. 6) and bordered on three sides by the depending apron walls 107 and 108,'the walls 107 being at each end of-the opening whereas the wall 108 is at the inner side, the longitudinal side wall of the machine body constituting the other side wall' upon the bottom of thevreceptacle 110 of crank arms 112 which are connected with cranks 113 carried by theshaft 83. i Y

r The silver receptacle 110 has a drain gutter 114 formed longitudinally of the bottom thereof the deepest point of which'gutter is at the central portion of the receptacle to body. A suitable drain plug 115 is removably positioned in this gutter, by means of which the contents of the receptacle can be run off when desired. v

The cover door 4 which overlies the silver gwasl1ing receptacle has secured toitsunder This lever is accessible through face a plurality of scrubbing brushes116, which when the cover door is in posit on project into the silver receptacle to a point in close proximity to the bottom thereof. It will, be readily understood that when water is placed in the receptacle 110, the silver placed therein and the cover door closed, the reciprocation of the receptacle through the medium of the connecting rod 112 actuated by the rotating crank 113, will cause the brushes to scrub the silver and thus thoroughly cleanthe same,

' From the foregoing description it will be readily seen that a large number of dishes and a large quantity of silverware can be thoroughly scrubbed at one operation.

The brushes 116 are preferably arranged in groups which extend transversely of the receptacle cover door 4:, and as is shown in Figure & the receptacle may be provided with a series of transverse partitions 117 to form a series of compartments 118 in each of which a group of brushes extends. This division of the receptacle 110 is provided so that the various pieces of silverware may be assorted, as for example knives may be all placed in one compartment, forks in another, teaspoons in the third and table spoons in the fourth. V Passageways 119 are formed through the partitions so that the water in the receptacle can freely circulate.

Having thus described my invention what I claim is:

1. In a dishwasher, a plurality of pairs of aligned plate receiving receptacles, a rotary dish brush in each receptacle, a crank element connecting the brushes in each pair of receptacles, ashaft having operative connection with said cranks for simultaneously rotating the brushes, and resilient means in each receptacle designed to support a plate in position to be acted upon by the adjacent brush.

2. In a dish washer, a plate receiving receptacle, a, rotary dish cleaning brush mountedwithin said receptacle, means for rotating said brush and a plate holding means adapted to supporta plate in engagement with the brush comprising a wire frame structure having an edge portion thereof extending inwardly to constitute a centrally located positioning ring, a cushion pad supported by said ring and adapted to hold a dish in engagement with said brush, said wire frame structure constituting a resilient supporting means.

S A dish washer comprising a dish receiving receptable, a brush mounted therein, a split wire ring supported within said receptable and spaced from said brush, said ring provided with a plurality of substantially parallel ends, means for receiving the ends and constituting a support therefor, said ring provided with portions bent outwardly from, the plane thereof-to constitute BERNARD F. LUNDELL. 

